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Usually, the need for splitting off part of a board is a combination of (a) when a board has more activity than most other forums and/or (b) when most of the posts in a board are in a specific area so that area gets split off into its own board. Neither of these is the case in the Middle East, Southwest Asia & Africa forum, which doesn't have all that much activity at all.
The easiest way to see more posting about a particular geographic area is to post about it yourself.
Disclaimer: I'm not on the Chowhound Team and I don't speak for them.
